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Measuring the consequence of forest fires on public health
by Staff Writers
London, UK (SPX) Feb 01, 2013


The researchers found was that pollution due to forest fires increased the need for salbutamol for up to 4 days after the fire - even a relatively small increase in smoke (10ug/m3 increase in PM2.5) was associated with a 6% increase in salbutamol dispensations.

Pollution from forest fires is impacting the health of people with asthma and other chronic obstructive lung diseases, finds a study in Biomed Central's open access journal Environmental Health. This study uses data from pharmacies and dispensaries to measure the increase in drugs needed to alleviate symptoms associated with pollution.

Forest fires burn nearly 1000 km2 of trees in British Columbia every year. The Ministry of Environment keeps a close watch on levels of particulate matter in the air caused by these fires but it is harder to measure the impact of this pollution on the health of people unless they are admitted to hospital.

Researchers from British Columbia Centre for Disease Control and University of British Columbia used dispensary records to find out if forest fires caused an increase in use of short acting beta agonist (SABA) such as salbutamol. Salbutamol sulphate is typically used as an inhaler to relive symptoms of asthma, chronic obstructive pulmonary disease (COPD) and other obstructive lung diseases.

What they found was that pollution due to forest fires increased the need for salbutamol for up to 4 days after the fire - even a relatively small increase in smoke (10ug/m3 increase in PM2.5) was associated with a 6% increase in salbutamol dispensations.

Dr Catherine Elliott, who led this study commented, "Our study shows that forest fires and pollution are impacting the health of people with chronic lung diseases. It also shows that it is possible to measure public health by monitoring dispensary databases, and that dispensary data shows effects in small populations, that have not been found in studies on other health measures such as visits to physicians' offices. This information is often routinely collected, and available for the entire population, consequently it is possible to perform more meaningful analysis."

Time series analysis of fine particulate matter and asthma reliever dispensations in populations affected by forest fires Catherine T Elliott, Sarah B Henderson and Victoria Wan Environmental Health (in press)

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Berkeley CA (SPX) Jan 31, 2013
The Earth's forests perform a well-known service to the planet, absorbing a great deal of the carbon dioxide pollution emitted into the atmosphere from human activities. But when trees are killed by natural disturbances, such as fire, drought or wind, their decay also releases carbon back into the atmosphere, making it critical to quantify tree mortality in order to understand the role of forest ... read more


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